A client is having several abends on daily basis and then it would go quite for about 2-4 weeks and start up again. In most cases the followingiseems to be the culprit:
Novell Open Enterprise Server, NetWare 6.5
PVER: 6.50.07

Server NWFS1 halted Monday, 22 February 2010 10:59:28.257 am
Abend 1 on P01: Server-5.70.07: Page Fault Processor Exception (Error code 00000000)

Registers:
CS = 0008 DS = 0010 ES = 0010 FS = 0010 GS = 0010 SS = 0010
EAX = 00008400 EBX = 00000000 ECX = 00000000 EDX = 00000001
ESI = 00000000 EDI = 00000000 EBP = 80008000 ESP = 89E01AAC
EIP = 89DD69E0 FLAGS = 00010046
89DD69E0 8B8100030000 MOV EAX, [ECX+00000300]=?
EIP in ACPIDRV.PSM at code start +000059E0h
Access Location: 0x00000300

The violation occurred while processing the following instruction:
89DD69E0 8B8100030000 MOV EAX, [ECX+00000300]
89DD69E6 2500100000 AND EAX, 00001000
89DD69EB 7504 JNZ 89DD69F1
89DD69ED 31C0 XOR EAX, EAX
89DD69EF EB33 JMP 89DD6A24
89DD69F1 E8DC473376 CALL LOADER.NLM|GetSuperHighResolutionTimer
89DD69F6 89C6 MOV ESI, EAX
89DD69F8 EB1B JMP 89DD6A15
89DD69FA E8D3473376 CALL LOADER.NLM|GetSuperHighResolutionTimer
89DD69FF 39F0 CMP EAX, ESI



Running process: Interrupt service routine (nested count 5)
Interrupted process: Processor 1: IDLE Thread Process
Thread Owned by NLM: SERVER.NLM
Stack pointer: 89E01FB8
OS Stack limit: 89E00000
CPU 1 (Thread 89CDF420) is in a NO SLEEP state
Scheduling priority: 67371008
Wait state: 3031111 Intermedidate Goto READY


I did not include the rest of the log if it is needed it is attached.
We've had the server checked out with IBM and they cannot find any issues with the hardware including the processors.
Can someone let me know what exactly does the ACPIDRV.PSM does?

Regards,


Jon